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US 2004/0002556 A1Published application
Macromer forming catalysts
AssigneeJohnson & Johnson Vision Care, Inc.
InventorsFrank F. Molock, Annie C. Maiden, Xiaoping Lin, Carrie L. Caison, Michael R. Clark, Robert Love
Life of this patent
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Abstract
The invention is the method of preparing macromer for use in making ophthalmic lenses comprising combining two or more monomers and using a macromer-forming catalyst, wherein the macromer-forming catalyst comprises triethylamine or bismuth.
Claims76
A monomer mix composition comprising
- a macromer, wherein the macromer comprises a reaction product of an electrophilic compound and a macromer-precursor material in the presence of a macromer-forming catalyst;
- and
- a visible light photoinitiator, wherein the macromer-forming catalyst is compatible with the photoinitiator.
A monomer mix composition comprising
- a macromer, wherein the macromer comprises a reaction product of an electrophilic compound and a macromer-precursor material in the presence of a macromer-forming catalyst;
- and
- a visible light photoinitiator, wherein the macromer-forming catalyst is removed after the reaction between the electrophilic compound and the macromer-precursor material.
A method of preparing a monomer mix comprising:
- combining an electrophilic compound and a macromer-precursor material;
- using a macromer-forming catalyst for a reaction between the electrophilic compound and the macromer-precursor material, wherein the macromer-forming catalyst is compatible with a visible light photoinitiator;
- and
- preparing a monomer mix comprising a reaction product of the electrophilic compound and the macromer-precursor material, and the photoinitiator.
1 more element
A method of preparing a macromer, the method comprising:
- (a) reacting in tetrahydrofuran and p-xylene, bis(dimethylamino)-methylsilane, a solution of tetrabutylammonium 3-chlorobenzoate, methylmethacrylate, (trimethylsiloxy)ethyl methacrylate, and methyltrimethylsilyl dimethylketene acetal to form reaction product (a);
- (b) reacting reaction product (a) with (trimethylsiloxy)ethyl methacrylate, mono-alkyl terminated polydimethylsiloxanes, TRIS and methacryloxypropyltris(trimethylsiloxy)silane to form reaction product (b);
- (c) reacting reaction product (b) with (trimethylsiloxy)ethyl methacrylate, and methylmethacrylate, bis(di methylamino)-methylsilane, to form reaction product (c);
- (d) reacting reaction product (c) in methanol with water and dichloroacetic acid;
- to form a macromer precursor and
- (e) reacting said macromer precursor with 3-isopropenyl-α,α-dimethylbenzyl isocyanate, in the presence of bismuth (III) 2-ethyl hexanoate;
- to form a macromer and
- adding bis-(2,6-dimethoxybenzoyl)-(2,4,4-trimethylpentyl)phosphine oxide to said macromer for a subsequent reaction.
5 more elements
A monomer mix composition comprising:
- a macromer comprising components formed from methylmethacrylate, (trimethylsiloxy)ethyl methacrylate, methyltrimethylsilyl dimethylketene acetal, mono-alkyl terminated polydimethylsiloxanes, methacryloxypropyltris(trimethylsiloxy)silane, and 3-isopropenyl-α,α-dimethylbenzyl isocyanate in the presence of a bismuth(III) 2-ethyl hexanoate;
- and
- bis-(2,6-dimethoxybenzoyl)-(2,4,4-trimethylpentyl)phosphine oxide.
A composition of matter comprising:
- a macromer formed from an electrophilic compound and a macromer-precursor material in the presence of a macromer-forming catalyst;
- and
- a visible light photoinitiator, wherein the macromer-forming catalyst is compatible with the photoinitiator.
Dependencies are inferred from the claim text.